Patek Philippe 3940J-025 Perpetual Calendar Yellow Gold / Roman Numerals (30840)

30840 Patek Philippe 3940J Perpetual Calendar 3940 J 025 3940-025, 18K yellow gold on a strap with an 18K yellow gold deployant buckle, automatic perpetual calendar (Italian) with, day, date, month, moonphase, 24 hours indicator, leap year indicator, very rare white dial with black Roman numerals and javelin hands, sapphire crystal, water resistant, diameter: 36mm, thickness: 9mm, Like New with original winding box (it has slightly deteriorated, which is typical of Patek boxes of this era), additional solid case back, setting pin, and certificate dated 12/2000.


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More about Patek Philippe 3940J-025 Perpetual Calendar Yellow Gold / Roman Numerals

This is an 18K yellow gold Patek Philippe Perpetual Calendar 3940j. It has an alligator leather strap with an 18K Patek Philippe yellow gold deployment buckle, and a scratch resistant sapphire crystal. There is a snap-on exhibition sapphire display case back, with a push/pull winding crown. The 36mm diameter solid three-body case, downturned lugs, and cupped bezel are polished. The rare white dial has black Roman numeral hour markers around a railway-style perimeter minute/seconds track. It has blued javelin hands. The month and leap year are displayed on a sub dial at 3 o’clock. The date and moon phase sub dial is at 6 o’clock, with the day and 24-hour time indicator is at 9 o'clock. It has a 46-hour power reserve at full wind, and it’s water resistant to 25 meters/80 feet. The 9mm thick case, dial, and movement are all signed.

This Patek Philippe Perpetual Calendar 3940j has a mechanical automatic self-winding Patek Philippe caliber 240-114 movement that's rhodium-plated with fausses cotes embellishment. It has the Seal of Geneva quality seal, as well as the Patek Philippe stamp. It's constructed with 27 jewels, 275 parts, and a lateral lever escapement with three arms under a polished steel bridge. It has a 22K winding rotor with the Patek Philipppe Calatrava symbol, and a patented Patek Philippe Gyromax balance that adjusts for cold, heat, isochronism and 5 positions. It includes a shock absorber mechanism, and a self-compensating free-sprung Breguet balance spring.

Patek Philippe made the very first perpetual calendar wristwatch in 1925. It self-adjusts for the months that have only 28 or 30 days, and for leap years. The Patek Philippe Perpetual Calendar 3940 was introduced in 1985 and was discontinued in 2006